[feat] Mock example

Author: ftnext

samplecode/phpunit-example/src/mockExample.php

@@ -0,0 +1,20 @@
+<?php
+
+class HttpCommunication
+{
+    public function communicate(): int
+    {
+        $status_code = 200;  // ダミーの値
+        echo "HTTP通信をしています...\n";
+        return $status_code;
+    }
+}
+
+function foo(HttpCommunication $communication): void
+{
+    echo "foo start\n";
+
+    $status_code = $communication->communicate();
+
+    echo "foo end\n";
+}

samplecode/phpunit-example/tests/mockExampleTest.php

@@ -0,0 +1,18 @@
+<?php
+use PHPUnit\Framework\TestCase;
+
+require_once __DIR__ . "/../src/mockExample.php";
+
+class MockExampleTest extends TestCase
+{
+    public function test_モックを使うテストの例(): void
+    {
+        $mocked_communication = $this->createMock(HttpCommunication::class);
+        $mocked_communication->expects($this->once())
+            ->method("communicate")
+            ->with()
+            ->willReturn(200);
+
+        foo($mocked_communication);
+    }
+}